And erwin lavens



(No Model.)

O. A. LIEB 861 1. LAVENS. INSULATOR.

No. 450,294. Patented Apr. 14,1891.

m ,TD 5

ML: AT170BNEY' UNITED STATES] PATENT OFFICE.

CHARLES A. LIEB, OF NEW YORK, AND ERVIN LAVENS, OF BROOKLYN, NEW YORK; SAID LAVENS ASSIGNOR TO SAID LIEB.

INSULATOR.

' SPECIFICATION forming part Of Letters Patent ITOa 450,294, dated April 14, 1891.

Application filed December 8, 1890. $erial No. 874,002. (No model.)

To aZZ whom it may concern.-

Be it known that we, CHARLES A. LIEB, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, and ERWIN LAVENS, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improved Bell-Insulators, of which the following is a specification.

Our invention relates to an improved construction of insulated supporters, sometimes called f bell-insulators, for overhead electric wires in electric street railway systems, adapted to use also, however, in other places, wherever, in fact, it is desired to support a wire. The invention consists in a metallic casting provided with a recess in which the insulating material may be placed, and having also hooks or their equivalents, whereby the supporter may be attached to a sustaining-wire, and it has also a cross bolt or pin whereby the eyebolt or its equivalent and also its insulating material may be permanently held within the metallic part or casting; and the invention also extends to the employment of means whereby suspending wires other than continuous wires may be used, and we also include in the invention the method employed for making ourinsulated supporter.

lVe illustrate the invention as applied to trolley-wires as the wire supported and to span-wires as the means for sustaining the supporter; but we wish it understood, as before stated, thatit may be used in connection with any wire and with any suitable means for sustaining the device.

Figure 1 illustrates an elevation of the device. Fig. 2 illustrates an end elevation thereof.

A is a span-wire.

B is the metal casting. It has on opposite sides the hooks O O, which engage with the span-wire, and also preferably a lateral sustaining device or cradle D on the top of the casting, whereby the span-wire will be held in proper place at its deflected part Where it passes over the supporter. It is thus defiected so that the supporter will not slide thereon.

E E are bosses, which we prefer to form on the sides of the casting, through which a hole is made for the passage of a cross bolt, pin, or rivet F.

G is the eyebolt. It maybe made in any preferred manner and is provided with screwthread in or on its shank H, which engages with threads on the usual device (not shown) which is fastened to the trolley-wire, and whereby it is attached to the insulated supporter. The eyebolt is surrounded, embedded, or placed in insulating material I, whichmay be vulcabeston, hard rubber, glass, wood, or other equivalent material, whereby it is prevented from coming in contact with any metallic part either of the casting B or the pin, bolt, or rivet F.

J is an umbrella, which may be molded or otherwise made as part of the insulating material or separate and different material, as preferred. ltprotects the underlying parts from accumulations of ice, snow, water, (be, which might short-circuit the device as now well known. It will be understood that the eyebolt may be embedded or protected in and by the insulating material prior to its insertion in the casting and then placed in the same, there being preferably a layer of plastic material Ksuch as asphaltum, plaster-ofparis, putty, unhardened vulcabcston, or rubber, which may thereafter be hardened or allowed to l1ardenplaced first in the casting, so that when the insulated eyebolt is pressed into its position in the casting this plastic material, being partly displaced, will afford a firm and uniform bed or support for the eyebolt and its insulating material within the casting, so that it will not move therein, but be rigidly held and will render it moisture-proof. The eyebolt may, however, be first placed in the casting, both parts being held in the desired relative position by a suitable mold, and then the insulating material may be molded or formed about it and be low it, as shown. For a cheap structure a wooden spool may be placed within the eyebolt, through which the bolt F passes, and also wood may be used as the insulating material about the outer portions of the eyebolt. I sometimes employ holes 0 O in the ends of thearms, to which separate wire may be attached for the suspension of the device in place of a continuous span-wire.

It is manifest that the umbrella part need not be employed, as shown, if not desired. Sometimes it will not be needed,for indoor wires, for instance; also, if the metal of the casting be sufliciently thick, it will not be necessary to employ the bosses E.

It will be specially noticed that should the insulating material be burned out or crumble or otherwise be destroyed, still the trolley or other supported wire cannot drop into the street or building, because the bolt or rivetF will nevertheless engage with the eyebolt and hold the wire until repairs can be made.

\Ve do not limit ourselves to the details of construction shown, because they may be somewhat departed from and still the essentials of the invention be employed.

e claim-- 1. An insulated supporter for electric wires, comprising, essentially, a hollow metallic casting or part having hooks or like devices integral therewith, an eyebolt, insulating material surrounding the eyebolt, the whole being held within the casting by a cross bolt or rivet, and said cross bolt or rivet, substantially as set forth.

2. An insulated su pporler for electric wires, comprising, essentially, a hollow metallic casting or part having hooks integral therewith, an eyebolt, insulating material on all sides thereof, and a cross bolt or rivet which passes through the metallic part and also through the eye of the eyebolt, substantially as set forth.

3. An insulated supporter for electric wires, comprising, essentially, a hollow casting or metal part provided with means whereby it may be suspended, an eyebolt, insulating material surrounding the eyebolt, a part of which constitutes an umbrella, and a cross bolt or rivet whereby the eyebolt and its insulating material are held within the metallic part, substantially as set forth.

4. An insulated eyebolt or like device for use in supporters for electric wires, comprising a threaded metallic part, insulating material surrounding it at all points except where threaded, a part of which insulating material forms an umbrella, substantially as set forth.

5. An insulated supporter for electric wires, comprising, essentially, a hollow metallic casting or part, an eyebolt or like device within the casting, and insulating material for the eyebolt, a part of which constitutes an umbrella, substantially as set forth.

6. An insulated supporter for electric wires, comprising a hollow metallic casting or part, an eyebolt or like device, insulating material placed within the casting and surrounding the eyebolt, and a bed or lining between the casting and the insulating material, substantially as set forth.

7. An insulated supporter for electric wires, comprising a hollow metallic casting or part, an eyebolt or like device, insulating material placed within the casting and surrounding the eyebolt, a bed orlining between the casting and the insulating material, and a cross bolt or rivet passing through the casting and through the eyebolt, substantially as set forth.

8. An insulated supporter for electric wires, comprising a metallic casting having arms provided with holes for the attachment of wires integral therewith, and an insulated eyebolt or like device held by the casting, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 25th day of November, A. D. 1890.

CHARLES A. LIEB. ERWIN LAVENS. Witnesses:

FREDERICK SMITH, PHILLIPS ABBOTT. 

